Correct Answer: A

Rationale: The correct answer is A. Caring for a patient with tuberculosis requires the nurse to use an N95 respirator, gown, gloves, and eyewear to protect against airborne transmission of the disease. Choice B and D are incorrect because while communication signs for precautions are important, the essential items needed for caring for a patient with tuberculosis are personal protective equipment to prevent transmission. Choice C is also incorrect as negative-pressure airflow in the room is a facility-related requirement and not an item carried by the nurse.

Correct Answer: B

Rationale: The most effective intervention in preventing postoperative complications is to ambulate the patient as soon as possible. Early ambulation helps prevent complications like deep vein thrombosis and pneumonia by enhancing circulation and preventing respiratory issues. Encouraging the patient to drink fluids, perform deep breathing exercises, or range of motion exercises are beneficial interventions, but ambulation is the priority due to its overall impact on preventing various postoperative complications.

Correct Answer: A

Rationale: The correct answer is to check the patient's heart rate before administering digoxin. Digoxin is a medication that primarily affects cardiac function. Monitoring the heart rate is crucial because digoxin can cause arrhythmias or worsen existing heart rhythm abnormalities. Assessing blood pressure may also be important but is secondary to evaluating the heart rate when administering digoxin. Ensuring the patient has eaten before administration is not directly related to the safe administration of digoxin. Monitoring the patient's weight is not a priority action before administering digoxin.

Correct Answer: B

Rationale: The correct answer is B: Back. Back injuries are most common during lifting and bending tasks, especially in an orthopedic unit. When lifting or repositioning patients, nurses must prioritize proper body mechanics to prevent strain on the back. Choices A, C, and D are less likely to occur as frequently as back injuries in this scenario because of the nature of the tasks involved in orthopedic patient care.

Correct Answer: C

Rationale: After a patient has fallen, it is crucial to notify the healthcare provider. The provider needs to be informed so that further assessment, evaluation, or intervention can be carried out to ensure the patient's safety and well-being. Re-assessing the patient (Choice A) is important but notifying the healthcare provider takes precedence. Completing an incident report (Choice B) is necessary but should follow notifying the healthcare provider. Doing nothing (Choice D) is not appropriate as patient safety and potential underlying issues need to be addressed promptly.